package com.bit.forum.services.impl;

import com.bit.forum.common.AppResult;
import com.bit.forum.common.ResultCode;
import com.bit.forum.dao.ArticleMapper;
import com.bit.forum.exception.ApplicationException;
import com.bit.forum.model.Article;
import com.bit.forum.model.Board;
import com.bit.forum.model.User;
import com.bit.forum.services.IArticleService;
import com.bit.forum.services.IBoardService;
import com.bit.forum.services.IUserService;
import com.bit.forum.utils.StringUtil;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Date;
import java.util.List;

@Service
@Slf4j
public class ArticleServiceImpl implements IArticleService {
    @Resource
    private ArticleMapper articleMapper;
    @Resource
    private IUserService userService;
    @Resource
    private IBoardService boardService;
    @Override
    public void create(Article article) {
        if(article == null||article.getUserId() == null ||article.getBoardId()==null
        || StringUtil.isEmpty(article.getTitle())
        ||StringUtil.isEmpty(article.getContent())){
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        article.setVisitCount(0);
        article.setReplyCount(0);
        article.setLikeCount(0);
        article.setDeleteState((byte) 0);
        article.setState((byte) 0);
        Date date = new Date();
        article.setCreateTime(date);
        article.setUpdateTime(date);

        int articleRow = articleMapper.insertSelective(article);
        if(articleRow <= 0){
            log.warn(ResultCode.FAILED_CREATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_CREATE));
        }
        User user = userService.selectById(article.getUserId());
        if(user == null){
            log.warn(ResultCode.FAILED_CREATE.toString()+"发帖失败user id ="+article.getUserId());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_CREATE));
        }
        userService.addOneArticleCountById(user.getId());
        Board board = boardService.selectById(article.getBoardId());
        if(board == null){
            log.warn(ResultCode.FAILED_CREATE.toString()+"发帖失败board id ="+article.getBoardId());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_CREATE));
        }
        boardService.addOneArticleCountById(board.getId());
        log.info(ResultCode.SUCCESS+"userid = "+article.getUserId()+"board id ="+article.getBoardId()+"success");
        //throw new ApplicationException(AppResult.failed("测试事务回滚"));
    }

    @Override
    public List<Article> selectAll() {
        List<Article> articles = articleMapper.selectAll();
        return articles;
    }

    @Override
    public List<Article> selectAllByBoardId(Long boardId) {
        if(boardId == null||boardId<=0){
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        Board board = boardService.selectById(boardId);
        if(board == null){
            log.warn(ResultCode.FAILED_BOARD_NOT_EXISTS+"board id ="+boardId);
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_BOARD_NOT_EXISTS));
        }
        List<Article> articles = articleMapper.selectAllByBoardId(boardId);
        return articles;
    }

    @Override
    public List<Article> selectByUserId(Long userId) {
        if (userId == null || userId <= 0) {
            // 打印日志
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            // 抛出异常
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        // 校验用户是否存在
        User user = userService.selectById(userId);
        if (user == null) {
            // 打印日志
            log.warn(ResultCode.FAILED_USER_NOT_EXISTS.toString() + ", user id = " + userId);
            // 抛出异常
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_USER_NOT_EXISTS));
        }
        // 调用DAO
        List<Article> articles = articleMapper.selectByUserId(userId);
        // 返回结果
        return articles;
    }

    @Override
    public Article selectDetailById(Long id) {
        if(id == null||id<=0){
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        Article article = articleMapper.selectDetailById(id);
        if(article == null){
            log.warn(ResultCode.FAILED_ARTICLE_NOT_EXISTS.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_ARTICLE_NOT_EXISTS));
        }
        Article updateArticle = new Article();
        updateArticle.setId(article.getId());
        updateArticle.setVisitCount(article.getVisitCount()+1);
        int row = articleMapper.updateByPrimaryKeySelective(updateArticle);
        if(row != 1){
            log.warn(ResultCode.ERROR_SERVICES.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.ERROR_SERVICES));
        }
        article.setVisitCount(article.getVisitCount()+1);
        return article;
    }

    @Override
    public void modify(Long id, String title, String content) {
        if(id == null||id <= 0||StringUtil.isEmpty(title)||StringUtil.isEmpty(content)){
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        Article updateArticle = new Article();
        updateArticle.setId(id);
        updateArticle.setTitle(title);
        updateArticle.setContent(content);
        updateArticle.setUpdateTime(new Date());
        int row = articleMapper.updateByPrimaryKeySelective(updateArticle);
        if(row != 1){
            log.warn(ResultCode.ERROR_SERVICES.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.ERROR_SERVICES));
        }
    }

    @Override
    public Article selectById(Long id) {
        if(id == null||id <= 0){
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        Article article = articleMapper.selectByPrimaryKey(id);

        return article;
    }

    @Override
    public void thumbsUpById(Long id) {
        if(id == null||id <= 0){
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        Article article = articleMapper.selectByPrimaryKey(id);
        if(article == null){
            log.warn(ResultCode.FAILED_ARTICLE_NOT_EXISTS.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_ARTICLE_BANNED));
        }
        if(article.getState() == 1||article.getDeleteState() == 1){
            log.warn(ResultCode.FAILED_ARTICLE_BANNED.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_ARTICLE_BANNED));
        }
        Article updateArticle = new Article();
        updateArticle.setId(article.getId());
        updateArticle.setLikeCount(article.getLikeCount() + 1);
        updateArticle.setUpdateTime(new Date());

        // 调用DAO
        int row = articleMapper.updateByPrimaryKeySelective(updateArticle);
        if (row != 1) {
            // 打印日志
            log.warn(ResultCode.ERROR_SERVICES.toString());
            // 抛出异常
            throw new ApplicationException(AppResult.failed(ResultCode.ERROR_SERVICES));
        }

    }

    @Override
    public void deleteById(Long id) {
        if(id == null|| id <= 0){
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        Article article = articleMapper.selectByPrimaryKey(id);
        if(article == null||article.getDeleteState() == 1){
            log.warn(ResultCode.FAILED_BOARD_NOT_EXISTS.toString()+",article id ="+id);
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_BOARD_NOT_EXISTS));
        }
        Article updateArticle = new Article();
        updateArticle.setId(article.getId());
        updateArticle.setDeleteState((byte) 1);
        int row = articleMapper.updateByPrimaryKeySelective(updateArticle);
        if(row != 1){
            log.warn(ResultCode.ERROR_SERVICES.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.ERROR_SERVICES));
        }
        boardService.subOneArticleCountById(article.getBoardId());
        userService.subOneArticleCountById(article.getUserId());
        log.info("删除帖子成功, article id = " + article.getId() + ", user id = " + article.getUserId() + ".");

    }

    @Override
    public void addOneReplyCountById(Long id) {
        if(id == null|| id <= 0){
            log.warn(ResultCode.FAILED_PARAMS_VALIDATE.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE));
        }
        Article article = articleMapper.selectByPrimaryKey(id);
        if(article == null||article.getDeleteState() == 1){
            log.warn(ResultCode.FAILED_ARTICLE_NOT_EXISTS.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_ARTICLE_NOT_EXISTS));
        }
        if(article.getState() == 1){
            log.warn(ResultCode.FAILED_ARTICLE_BANNED.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.FAILED_ARTICLE_BANNED));
        }
        Article updateArticle = new Article();
        updateArticle.setId(article.getId());
        updateArticle.setReplyCount(article.getReplyCount()+1);
        updateArticle.setUpdateTime(new Date());
        int row = articleMapper.updateByPrimaryKeySelective(updateArticle);
        if(row != 1){
            log.warn(ResultCode.ERROR_SERVICES.toString());
            throw new ApplicationException(AppResult.failed(ResultCode.ERROR_SERVICES));
        }
    }
}
